Playing Eliss Infinity is like taking care of a toddler. It's fun, stressful and, if you do it wrong, poop winds up on everything. Ok, maybe not that last part. But, it does communicate the idea that something incredibly valuable in the universe needs the constant attention of your hands to live. No pressure.
The original version of Eliss has stood as one of my favorite iOS titles ever since it came out five years ago. The premise is simple: differently colored blobs of cosmic matter blip into existence and you need to stop them from touching each other and guide them into spots where they explode into stars. But, before you know it, you have to do that a whole lot, on a crowded screen where angry comets and implacable black holes screw up any flow you had going. The game's really a test of how quickly you can do information intake, generate strategy and execute tricky movements. Even when you use all the fingers you can, the difficulty remains daunting. Now's it's been re-invented as Eliss Infinity ($2.99, Apple App Store).